Your question: What is trail on a motorbike?

Trail, or caster, is the horizontal distance from where the front wheel touches the ground to where the steering axis intersects the ground. The measurement is considered positive if the front wheel ground contact point is behind (towards the rear of the bike) the steering axis intersection with the ground.

What is the trail measurement on a motorcycle?

Trail (B) is measured in distance (inches or millimeters) between the point of the front wheel’s contact with the ground and a line drawn through the axis of the steering head. Under normal operation, this contact point is always some distance behind the projected line—somewhere between 2 and 4 inches (5–10 cm).

How does trail affect motorcycle handling?

The bottom line here is that the more rake and trail we have, the more stable the bike will become, although both steering and maneuverability may suffer for it. Conversely, when rake and trail are reduced, the bike will steer quicker and become more maneuverable, though it’s usually at the expense of stability.

What is rake on a motorcycle frame?

Rake is the angle, in degrees, that the steering head of the frame—not the forks—is tilted back from the vertical. For example, the rake angle on all the Harley-Davidson Touring models is 26 degrees.

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What is a low trail bike?

“Low-trail” bikes, designed to carry cargo on the front of the bike, have a trail figure of less than 45mm. Mechanical Trail (Front Normal Trail), describes the distance between the point where the front tire contacts the ground and the steering axis, measured perpendicular to the steering axis.

What is a good lean angle on motorcycle?

Elements like tires, motorcycle type, ground clearance, and other items come into play when we consider the maximum possible lean angle we can create, but first and foremost, riders need to overcome the controlling internal program that pre-sets lean angle limits to 20 degrees.

Does lowering a motorcycle affect the handling?

Effects on Handling

Even if you lower your bike by the book, handling can be affected to some degree. “When you lower a bike, you also lower its center of gravity, so it’ll handle a bit better in certain circumstances,” says Langley. “The negative is that your initial ground clearance is decreased.

How does rake affect handling?

The smaller the rake angle, the less effort is required to turn the steering. Though, the motorcycle will be less stable in a straight line. Conversely, a larger rake angle requires more effort to turn but tends to make the motorcycle more stable at high speeds and helps maintain a straight course.

How does wheelbase affect motorcycle handling?

In general, wheelbase affects a motorcycle’s handling and feeling of stability. Shorter wheelbases usually feel more lively in terms of cornering, but can feel less stable at high speed. Conversely, a long wheelbase will usually feel very planted when moving fast, but may feel slow to respond to steering inputs.

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What is a fork on a motorcycle?

A motorcycle fork connects a motorcycle’s front wheel and axle to its frame, typically via a yoke, also known as a triple clamp, which consists of an upper yoke joined to a lower yoke via a steering stem, a shaft that runs through the steering head, creating the steering axis.

How are motorcycle rakes measured?

OFFSET: Centerline of the top steering neck to the centerline of the top of the fork tubes. RAKE: The angle in degrees of the steering neck from vertical. FORK LENGTH: The distance between the top of the fork tubes to the centerline of the axle.

Why do choppers have long forks?

Springer, girder and glide forks were extended by creative welders to increase ground clearance a bit, then a bit more, then a lot. Modify the frame neck to accommodate the longer forks without picking the bike up too far, and the chopper was born.

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